Proxemics Play has been suggested as a concept for designing socially engaging play experiences. We expand on this concept by investigating the role of fixed and semi-fixed architectural features in configuring meaningful socio-spatial relations of collocated play. We draw on ideas of perceptual, control and deixis proxemics to design and evaluate three cross-device games, illustrating novel directions for proxemics play. The games also illustrate new ways for mobile devices to support physical activity as well as face-to-face social interaction between children.